Question

Compounds are pure substances formed by the chemical combination of two or more elements in a fixed ratio by mass. Thus,

1) water, air and diamond are compounds.
2)marble, water and common salt are compounds.
3) graphite, soot and air are compounds.
4) milk, air and sea water are compounds.​

Answer 1

Answer:

marble,water and common salt are compounds

Answer 2

Answer:

Compounds are pure substances formed by the chemical combination of two or more elements in a fixed ratio by mass.

Thus, 2) marble, water and common salt (NaCL) are compounds

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